JP3685607B2 - Manufacturing method of optical communication package - Google Patents

Description

【００１５】
【発明の効果】
以上に説明したように、本発明による光通信用パッケージの製造方法によれば、光通信用パッケージを構成するフレーム及びリングの製造コストを従来よりも半分以下に低減することができるので、光通信用パッケージ全体の製造コストを大幅に低下させることが可能になる。
【図面の簡単な説明】
【図１】 （ａ）は本発明の実施形態の対象となる光通信用パッケージのベースプレート、フレーム、及びリングなどを示す斜視図、（ｂ）は（ａ）の正面図である。
【図２】 図１（ａ）のＡ−Ａ’線断面図を含む図で、光通信用パッケージの構成の概略を説明するための図である。
【図３】 光通信用パッケージの全体の製造工程を説明するための流れ図である。
【図４】 本実施形態による光通信用パッケージのフレーム及びリングの製造工程を説明するための図である。
【図５】 従来の光通信用パッケージのフレーム及びリングの製造工程を説明するための図である。
【符号の説明】
１ ベースプレート
２ リング
３ フレーム
４ ホルダー挿入部
５ ホルダー
６ ガラスレンズ
７ Ａｇロー材
８ セラミック基板
９ リード
２１ 丸パイプ
２２ 角パイプ
２４ セラミック基板はめ込み部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a manufacturing method of an optical communication package including a frame for holding a holder and a ring bonded on the frame.
[0002]
[Prior art]
In the manufacture of a conventional optical communication package equipped with a holder for inserting and fixing an optical fiber, a frame for holding a lens holder and a ring mounted thereon are manufactured by a wire cutting method as shown in FIG. This is done by machining by (electric discharge machining method). That is, a wire 12 is inserted into a material 11 obtained by cutting a columnar member made of Kovar with a predetermined size, and a current is passed through the wire 12 while taking a long time in the direction of arrow α in the figure. By gradually moving the material 11, the material 11 is separated into an outer frame portion 11a and an inner remaining portion 11b (the hatched portion in FIG. 5). It was. Moreover, the ring joined on the frame was processed and molded by the same wire cutting method (electric discharge machining method).
[0003]
[Problems to be solved by the invention]
However, the method of manufacturing a frame or a ring by the wire cutting method as described above takes a long processing time, and the remaining inner portion 11b cut by the wire 12 must be discarded. For example, a considerable part of the material 11 is wasted, which causes an increase in the manufacturing cost of the entire optical communication package.
[0004]
The present invention has been made paying attention to such problems of the prior art, and the entire frame or ring constituting the optical communication package is manufactured at a much lower cost than the conventional wire cut method. An object of the present invention is to provide a method for manufacturing an optical communication package that can greatly reduce the manufacturing cost of the optical communication package.
[0005]
[Means for Solving the Problems]
An optical communication package manufacturing method according to the present invention for solving the above problems is a method for manufacturing an optical communication package having a frame for holding a holder, wherein a hollow round pipe is formed into a square pipe shape. Forming the frame by cutting the square pipe with a predetermined length and forming a holder insertion portion and a ceramic substrate insertion portion in the cut portion. is there.
[0006]
A method for manufacturing an optical communication package according to the present invention is a method for manufacturing an optical communication package including a frame for holding a holder and a ring joined on the frame, and a hollow round pipe is used. The method includes a step of manufacturing the ring and the holder by forming into a square pipe shape and cutting the square pipe with a predetermined length.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described. First, an optical communication package that is a target of the present embodiment will be described with reference to FIGS. 1 and 2. 1A is a perspective view showing a base plate, a frame, a ring, and the like used in an optical communication package, FIG. 1B is a front view thereof, and FIG. 2 is a cross-sectional view taken along line AA ′ of FIG. It is a figure including a figure, and is a figure for demonstrating the outline of a structure of the package for optical communications.
[0008]
1 and 2, 1 is a Cu-W base plate, 3 is a Kovar frame joined on the base plate 1, 2 is a Kovar ring joined on the frame 3, A holder insertion portion 5 for inserting a holder formed in a part of the frame 3 is a holder (when an optical fiber without an aspheric lens is inserted, a glass lens 6 is joined to the holder with a low melting glass. 7 is a ring-shaped Ag low material for joining the holder 5 to the frame 3. In FIG. 1, 8 is a ceramic substrate (alumina substrate) fixed to the opening (ceramic substrate fitting portion) of the frame 3, and 9 is a lead brazed to an external terminal of the ceramic substrate 8.
[0009]
Next, FIG. 3 is a diagram showing the flow of the entire manufacturing process of the optical communication package. As shown in FIG. 3, in the manufacturing process of the optical communication package, after the base plate 1, the frame 3, the ring 2 and the ceramic substrate 8 are separately formed, they are brazed, Ni-plated, and Au The package is manufactured by plating. A lens holder with a glass lens manufactured separately from this is brazed to the package to be completed.
[0010]
In the flow of the manufacturing process of the entire optical communication package as shown in FIG. 3, conventionally, a great amount of time loss and material loss have occurred for manufacturing the frame 3 and the ring 2. As described above, the manufacturing cost of the whole package is high.
[0011]
Next, the manufacturing process of the frame 3 according to the present embodiment will be described with reference to FIG. First, a round pipe 21 that is hollow and has a long circular cross section is prepared (FIG. 4A). The round pipe 21 can now be manufactured at a very low cost. Next, a square pipe with a square cross section is formed from the round pipe 21 by, for example, a cold rolling method (FIG. 4B) (FIG. 4C). In the step of FIG. 4B, the square bar 20 is previously placed inside the round pipe 21. The square pipe 22 thus obtained is cut with a predetermined dimension (FIG. 4D). Then, a holder insertion portion 4 for inserting the holder, a substrate insertion portion (cut portion) 24 for mounting the ceramic substrate 8 and the like are processed and formed on the cut portion. Thereby, the frame 3 is manufactured.
[0012]
Also, the ring 2 is manufactured in substantially the same process as in the frame 3 described above. That is, first, a round pipe 21 having a circular hollow cross section is prepared (FIG. 4A), and the cross section is square-shaped from the round pipe 21 by a cold rolling method (FIG. 4B). By forming a square pipe (FIG. 4C) and cutting the obtained square pipe 22 with a predetermined dimension (FIG. 4D), the desired ring 2 is manufactured.
[0013]
According to an experiment by the present inventors, the frame 3 and the ring 2 manufactured by the method described in FIG. 4 are at the same level as those manufactured by the conventional wire cutting method in terms of brazing and plating. . Also, there was no problem in the environmental test (T / S condition condition B 15 cycle: 0/50 pc. T / C condition condition C 100 cycle: 0/50 pc). In addition, by manufacturing the frame 3 and the ring 2 by adopting the square pipe method of the present embodiment, the manufacturing cost of the frame 3 and the ring 2 is reduced by half or less compared to the case of using the conventional wire cutting method. (See Table 1 below). Therefore, as described above, the manufacturing cost of the frame 3 and the ring 2 is greatly reduced, and as a result, the manufacturing cost of the entire optical communication package can be greatly reduced.
[0014]
[Table 1]

[0015]
【The invention's effect】
As described above, according to the method for manufacturing an optical communication package according to the present invention, the manufacturing cost of the frame and the ring constituting the optical communication package can be reduced to half or less than the conventional one. The manufacturing cost of the entire package can be greatly reduced.
[Brief description of the drawings]
FIG. 1A is a perspective view showing a base plate, a frame, a ring, and the like of an optical communication package that is an object of an embodiment of the present invention, and FIG. 1B is a front view of FIG.
FIG. 2 is a diagram including a cross-sectional view taken along the line AA ′ of FIG.
FIG. 3 is a flowchart for explaining the entire manufacturing process of the optical communication package;
FIG. 4 is a view for explaining a manufacturing process of a frame and a ring of the optical communication package according to the present embodiment.
FIG. 5 is a diagram for explaining a manufacturing process of a frame and a ring of a conventional optical communication package.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base plate 2 Ring 3 Frame 4 Holder insertion part 5 Holder 6 Glass lens 7 Ag raw material 8 Ceramic substrate 9 Lead 21 Round pipe 22 Square pipe 24 Ceramic board insertion part

Claims (2)

A method of manufacturing an optical communication package having a frame for holding a holder,
Put a square bar with an outer shape that conforms to the shape of the inner wall side of the frame in advance inside the hollow round pipe , shape the round pipe into a square pipe shape by cold rolling method , and cut this square pipe to a predetermined length A step of manufacturing the frame by forming a holder insertion portion and a ceramic substrate insertion portion in the cut portion,
A method for manufacturing an optical communication package, comprising: A method of manufacturing an optical communication package comprising a frame for holding a holder and a ring joined on the frame,
Forming the ring and holder by forming a hollow round pipe into a square pipe shape and cutting the square pipe at a predetermined length;
A method for manufacturing an optical communication package, comprising:

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